特定类类型的 Autofac 扫描程序集 [英] Autofac Scanning Assemblies for certain class type

问题描述

我已经开始使用 Autofac 并想扫描一些 DLL 并让 Autofac 注册其中的一些类.

I've started using Autofac and want to scan some DLL's and get Autofac to register some of the classes within them.

我感兴趣的类都继承自 PluginBase 类，但下面的代码似乎没有注册它们.有人可以帮忙吗?

The classes that I'm interested in all inherit from a PluginBase class but the below code doesn't seem to be registering them. Can anyone help?

        var assemblies = AppDomain.CurrentDomain.GetAssemblies();


        var builder = new ContainerBuilder();
        builder.RegisterAssemblyTypes(assemblies)
            .Where(t => t.BaseType == typeof(PluginBase))
            .AsImplementedInterfaces()
            .AsSelf();

        var container = builder.Build();
        var pluginClasses = container.Resolve<IEnumerable<PluginBase>>();

        //pluginClasses is empty!!!!

推荐答案

我认为您需要在注册时指定插件的基类.调用 AsImplementedInterfaces 使用其实现的接口而不是基类型来注册类型.您应该更新您的注册以将您的插件注册为 PluginBase.

I think you need to specify the base class of your Plugins on registration. The call AsImplementedInterfaces registers the type with its implemented interfaces and not by its base type. You should update your registration to register your plugins as PluginBase.

代码如下:

var assemblies = AppDomain.CurrentDomain.GetAssemblies();


    var builder = new ContainerBuilder();
    builder.RegisterAssemblyTypes(assemblies)
        .Where(t => t.BaseType == typeof(PluginBase))
        .As<PluginBase>();

    var container = builder.Build();
    var pluginClasses = container.Resolve<IEnumerable<PluginBase>>();

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